On the first look arranging three YouTube videos next to each other seems pretty odd, but as I was exploring the You3b site I recognized the potential of it.

The combination of three thematically connected or contrasting videos can be quite interesting. (See Metanoise as an example). Changing the volume of the single clips even gives you more variations, therefore it almost feels like a live djing tool. If you guys find more interesting montages on the site, let me know.